{ "containers": { "cna": { "providerMetadata": { "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-06-04T18:42:43.045Z" }, "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-400", "description": "UNCONTROLLED RESOURCE CONSUMPTION CWE-400", "type": "CWE" } ] } ], "affected": [ { "vendor": "ABB", "product": "1SAP120600R0071 PM554-TP-ETH", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "Phoenix Contact", "product": "2700974 ILC 151 ETH", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "Phoenix Contact", "product": "ILC 191 ETH 2TX", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "Schneider Electric", "product": "Modicon M221", "versions": [ { "status": "affected", "version": "0", "lessThan": "v1.10.0.0", "versionType": "custom" }, { "status": "unaffected", "version": "v1.10.0.0" } ], "defaultStatus": "unaffected" }, { "vendor": "Schneider Electric", "product": "EcoStruxure Machine Expert – Basic", "versions": [ { "status": "affected", "version": "0", "lessThan": "v1.0", "versionType": "custom" }, { "status": "unaffected", "version": "v1.0" } ], "defaultStatus": "unaffected" }, { "vendor": "Siemens", "product": "6ES7211-1AE40-0XB0 Simatic S7-1211", "versions": [ { "status": "unaffected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "Siemens", "product": "6ES7314-6EH04-0AB0 Simatic S7-314", "versions": [ { "status": "unaffected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "Siemens", "product": "6ED1052-1CC01-0BA8 Logo! 8", "versions": [ { "status": "unaffected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "WAGO", "product": "750-889 Controller KNX IP", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "WAGO", "product": "750-8100 Controller PFC100", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "WAGO", "product": "750-880 Controller ETH", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" }, { "vendor": "WAGO", "product": "750-831 Controller BACnet/IP", "versions": [ { "status": "affected", "version": "Multiple" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "ABB, Phoenix Contact, Schneider Electric, Siemens, WAGO - Programmable Logic Controllers, multiple versions. Researchers have found some controllers are susceptible to a denial-of-service attack due to a flood of network packets.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
ABB, Phoenix Contact, Schneider Electric, Siemens, WAGO - Programmable Logic Controllers, multiple versions. Researchers have found some controllers are susceptible to a denial-of-service attack due to a flood of network packets.
" } ] } ], "references": [ { "url": "https://ics-cert.us-cert.gov/advisories/ICSA-19-106-03" }, { "url": "http://www.securityfocus.com/bid/108413", "name": "108413", "tags": [ "vdb-entry", "x_refsource_BID" ] }, { "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2019/icsa-19-106-03.json" } ], "workarounds": [ { "lang": "en", "value": "ABB concludes the reported behavior is not a vulnerability but is due to a misconfiguration of the PLC watchdog, which was left in the default factory settings. This has led to a configuration that does not match the expectations expressed in the test cases and the result is the PLC not reacting as intended. This misconfiguration can be fixed by setting an appropriate combination of task priority, task cycle time, and watchdog settings. Please see the “Onboard Ethernet Handling in CPU Firmware” chapter (System Technology for AC500 V2 Products > System Technology of CPU and Overall System > Onboard Technologies > Ethernet > Ethernet Protocols and Ports for AC500 V2 Products > Onboard Ethernet Handling in CPU Firmware) for further guidance.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "ABB concludes the reported behavior is not a vulnerability but is due to a misconfiguration of the PLC watchdog, which was left in the default factory settings. This has led to a configuration that does not match the expectations expressed in the test cases and the result is the PLC not reacting as intended. This misconfiguration can be fixed by setting an appropriate combination of task priority, task cycle time, and watchdog settings. Please see the “Onboard Ethernet Handling in CPU Firmware” chapter (System Technology for AC500 V2 Products > System Technology of CPU and Overall System > Onboard Technologies > Ethernet > Ethernet Protocols and Ports for AC500 V2 Products > Onboard Ethernet Handling in CPU Firmware) for further guidance." } ] }, { "lang": "en", "value": "Phoenix Contact acknowledges this as a “known, won’t fix” issue for old products. Currently available products provide countermeasures to mitigate the impact on the safety-related functionality. Phoenix Contact urges users to adhere to the Application note 107913_en_01.\n\n\n\nMore information can be found in the VDE CERT advisory https://cert.vde.com/en-us/advisories/vde-2018-012 .", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Phoenix Contact acknowledges this as a “known, won’t fix” issue for old products. Currently available products provide countermeasures to mitigate the impact on the safety-related functionality. Phoenix Contact urges users to adhere to the Application note 107913_en_01.
More information can be found in the VDE CERT advisory.
" } ] }, { "lang": "en", "value": "Siemens has investigated the vulnerability report on PLC cycle time influences and concludes the report does not demonstrate a valid vulnerability for Siemens PLCs.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Siemens has investigated the vulnerability report on PLC cycle time influences and concludes the report does not demonstrate a valid vulnerability for Siemens PLCs." } ] }, { "lang": "en", "value": "WAGO recommends users operate the devices in closed networks or protect them with a firewall against unauthorized access. Another recommended mitigation is to limit network traffic via the switch rate limit feature according to application needs.\nPlease also consult the product manuals on the WAGO website, as this is a known problem for some devices. Links to product manuals and specific instructions about how to limit switch rates can be found in the VDE CERT advisory https://cert.vde.com/de-de/advisories/vde-2018-013 .", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "WAGO recommends users operate the devices in closed networks or protect them with a firewall against unauthorized access. Another recommended mitigation is to limit network traffic via the switch rate limit feature according to application needs.Fixes are available in Schneider Electric\n\nModicon M221 firmware v1.10.0.0 and EcoStruxure Machine Expert – Basic v1.0 software (formerly SoMachine Basic) using either of the following options:
Use this link to download the Machine Expert Basic software.
Or run the Schneider Electric Software Update tool in order to download and install EcoStruxure Machine Expert – Basic v1.0 software.
For additional information, see the Schneider Electric security notice SEVD-2019-045-01. (https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2019-045-01)
Schneider Electric strongly recommends following industry cybersecurity best practices, such as: